Hlth 102 SU - 2

Hlth 102 SU - 2 - 1 Hlth 102 Class 2 The Nervous System 2...

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1 Hlth 102 – Class 2 The Nervous System
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2 Basic Divisions of the Nervous System CNS   Brain Spinal   Cord Forebrain Midbrain Hindbrain PNS Somatic Division Autonomic Division Cranial   Nerves Spinal  Nerves Sympathetic Para- sympathetic
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3 CNS (1) 1. Spinal Cord Dorsal roots – carries sensory information to the spinal cord from the  muscles, skin and viscera Ventral Roots – outgoing motor axons to muscles and viscera 2. Hindbrain (Brain Stem) Medulla – coordinates heart rate, blood pressure, respiration, digestion,  vomiting Cerebellum - involved in refinement of movement, posture, balance and  dizziness Pons – ability to maintain alertness to incoming information, sleep 
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4 CNS (2) 1. Midbrain Relay system for both vision and hearing Substantia nigra – related to the control of skeletal muscles  and movement
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5 CNS (3) 1. Forebrain  Cerebrum -  Perceptual, cognitive and higher motor functions, emotion, memory,  higher mental processes (reasoning, language) 4 lobes with specific functions Occipital (visual), Temporal  (auditory), Parietal (somesthetic), Frontal   (cognitive, behaviour, planning of voluntary motor behaviour) Basal Ganglia Comprised of the caudate nucleus, putamen, and globus pallidus Proper regulation of movement, muscle tone And afferents (inward passages) from all 4 lobes
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6 CNS (4) 1. Forebrain (continued) Limbic System Amygdala – coordinates action of autonomic nervous system:  emotional state Fornix – major connecting pathways  Septum – major connecting pathway: emotions
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This note was uploaded on 02/23/2009 for the course HLTH HLTH 102 taught by Professor Lindajessup during the Winter '09 term at Waterloo.

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Hlth 102 SU - 2 - 1 Hlth 102 Class 2 The Nervous System 2...

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